[Felix C]

Hello new guy here,

Have owned my GT5656 since new and never modified it. Recently had prolonged start up sequence with the system occassionally turning off after the Gateway screen flash and boot menu. Gateway tech advised to reinstall Windows Vista. (still same problem) and then later use system recovery disk to repair/reset.(still same problem) This period lasted about 1 week and now the machine turns off after the Gateway boot menu.(no longer enters windows)

Installed a new UPC, a 500W system. System powers on and can hear the fan but same issue as before in that it crashes and turns off entirely after the Gateway Boot Menu.

What else should I try? video card or motherboard? Some other?

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Hi Felix C
Possible causes may include a bad PSU (power supply unit) Ram, HDD or heat which affects all components.
First suggestion is to try a known good PSU, brand names tend to use lower quality PSUs to keep costs down
and that is why they cause so many problems, when you do this take the time to clean out the inside of the
case, see my canned text below on how to do this safely;

If the computer needs cleaning out, first remove the power cord from the wall and open up the case, take anti static precautions before touching anything inside, you can do this by touching a bare metal part of the case, remove the video card, blow out the slot and re-seat the card securely, do the same with the memory sticks, clean all internal fans, if you use canned compressed air do not let any fan spin freely this can damage them, use something like a clean lollipop stick to hold the fan.
Make sure all internal connections are secure and that there are no loose components, write down the psu details (make and model) re-assemble the computer, boot up and see how it goes.

[phillpower2]

Hi Felix C
Possible causes may include a bad PSU (power supply unit) Ram, HDD or heat which affects all components.
First suggestion is to try a known good PSU, brand names tend to use lower quality PSUs to keep costs down
and that is why they cause so many problems, when you do this take the time to clean out the inside of the
case, see my canned text below on how to do this safely;

If the computer needs cleaning out, first remove the power cord from the wall and open up the case, take anti static precautions before touching anything inside, you can do this by touching a bare metal part of the case, remove the video card, blow out the slot and re-seat the card securely, do the same with the memory sticks, clean all internal fans, if you use canned compressed air do not let any fan spin freely this can damage them, use something like a clean lollipop stick to hold the fan.
Make sure all internal connections are secure and that there are no loose components, write down the psu details (make and model) re-assemble the computer, boot up and see how it goes.